Workout Analysis

The Training -> Analysis window provides you with a detailed analysis of your workout.Watts / KilogramWe give 5 second, 1 minute, 5 minute and FTP power in terms of watts / kilogram. This removes and athelete's weight from the power equation. He can then compare his power with other athletes and determine where his strengths and weaknesses lie in terms of Anaerobic and aerobic ability and so determine the optimal training program based on training levels.Quadratic Power (QP)Average power is not the best reflection of how hard a particular workout was. Short hard efforts have proportionally more training effect and consequently take more out of you than long sessions of steady riding. Quadratic power takes all of the power measurements and raises them to the power 2 and then takes the mean of this value. This adds more weight to bursts of high power. To put it in simple maths if we take the average of two point: 5w and 5w it is the same as 7w and 3w (that is 5w) but the 7w/3w session would be harder. The quadratic mean is 5w for the first session but 6.9 w for the second.By placing more emphasis on high power efforts QP is a better reflection on how hard the session felt to the athlete.Load (L)This is expressed as a percentage of QP / FTP. A session ridden at FTP will have a load of 100%. As FTP will (hopefully) vary over a season Load takes into account this variable.Load enables you to compare training sessions from different periods with different fitness.Stress (S)Load reflects how hard a workout is in terms of the riders functional power but does not take into account the length of a workout. So it is not possible to the effect of workouts of different lengths on a athlete. Stress is defines asLoad raised to the power 2 * Length in hours * 100.Raising Load to the power 2 puts more weight on sessions ridden above FTP and less weight on sessions below FTP. A 1 hour session ridden at FTP will have a stress of 100. A half hour session: 50 and a 2 hour session: 200. A 40 minute session ridden at 1.2 x FTP has a stress value of 96.Stress lets you compare the physiological effect of sessions of different lengths.